diff --git a/gestion/tools/locate-mac.py b/gestion/tools/locate-mac.py
index 679b782e..21b550f2 100755
--- a/gestion/tools/locate-mac.py
+++ b/gestion/tools/locate-mac.py
@@ -35,4 +35,4 @@ while len(threading.enumerate()) > 1 :
     sleep(1)
 
 print
-system('/usr/scripts/gestion/whos.py mac=%s' % mac)
+system('/usr/scripts/gestion/whos.py -a mac=%s' % mac)